Text Formatting ⇒ Problem with \left

[deangelo]

Hello guys,

I'm having trouble using \ left[ in environment enumerate.

The code is this

Code: Select all

\begin{enumerate}
$ \left $
\item Existe um único elemento $ 1 $ no conjunto $ \bb{N} $, tal que $ 1 \neq s(n) $ para todo $ n \in \bb{N} $.
item Se um subconjunto $ X \subset \bb{N} $ é tal que $ 1 \in N $ e $ s(X) \in X $ (isto é, $ n \in X \imp s(n) \in X $), então $ X = N $.
$ \right} $
\end{enumerate}

Is presenting a compilation error.
How do I fix this?

Thank you!

[Stefan Kottwitz]

Hi,

\left and \right have to be used in pairs within the same context, i.e. within the same formula part, also not spanning over lines. That's a problem here. Furthermore, you just wrote \left without the delimiter afterwards, such as \left[. To solve the pairing problem, use \big, \bigg, \Big or \Bigg instead, with a delimiter.

Stefan

[deangelo]

Thank you Stefan,
It's working, but it is not how I wanted, I would like to stay like the picture below

screen.jpg (10.16 KiB) Viewed 4714 times

[Stefan Kottwitz]

It's not easy to mix variable sized braces with items in a list environment.

Some possible ways:

• Use TikZ, it's a big software package but easy to apply once you know how.
• Use an array instead an enumerate environment, and bigdelim or \left and \right.
• Make a manual workaround within an enumerate item with \makebox and a big brace.

If you would show a minimal working example of your code, I could show you how to implement such a solution.

Stefan

[deangelo]

Thank you very much!
I will test!